EP 0892931 B1 20031217 - VARIABLE PITCH STRUCTURED OPTICAL FILM
Title (en)
VARIABLE PITCH STRUCTURED OPTICAL FILM
Title (de)
STRUKTURIERTER OPTISCHER FILM MIT VARIABLER PERIODE
Title (fr)
FILM OPTIQUE STRUCTURE A PAS VARIABLE
Publication
Application
Priority
- US 9703323 W 19970303
- US 63107396 A 19960412
Abstract (en)
[origin: WO9739369A1] The present invention includes a structured optical film with variable pitch peaks and/or grooves to reduce the visibility of moiré interference patterns and optical displays incorporating one or more layers of the film. The pitch variations can be over groups of adjacent peaks and/or valleys or between adjacent pairs of peaks and/or valleys.
IPC 1-7
IPC 8 full level
G02B 5/00 (2006.01); G02B 5/02 (2006.01); G02B 5/04 (2006.01); G02F 1/1335 (2006.01)
CPC (source: EP KR US)
G02B 5/00 (2013.01 - EP KR US); G02B 5/0231 (2013.01 - EP US); G02B 5/0278 (2013.01 - EP US); G02B 5/045 (2013.01 - EP US); Y10S 385/901 (2013.01 - EP US); Y10S 428/913 (2013.01 - EP US); Y10T 428/24355 (2015.01 - EP US); Y10T 428/24479 (2015.01 - EP US); Y10T 428/24537 (2015.01 - EP US); Y10T 428/2457 (2015.01 - EP US); Y10T 428/24669 (2015.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
WO 9739369 A1 19971023; AU 2139697 A 19971107; AU 727440 B2 20001214; CA 2251252 A1 19971023; CA 2251252 C 20020205; CN 1132022 C 20031224; CN 1221494 A 19990630; DE 69726847 D1 20040129; DE 69726847 T2 20041104; EP 0892931 A1 19990127; EP 0892931 B1 20031217; JP 2000508786 A 20000711; JP 2008287265 A 20081127; JP 4195093 B2 20081210; JP 4834033 B2 20111207; KR 100431165 B1 20040812; KR 20000005436 A 20000125; US 5919551 A 19990706
DOCDB simple family (application)
US 9703323 W 19970303; AU 2139697 A 19970303; CA 2251252 A 19970303; CN 97195360 A 19970303; DE 69726847 T 19970303; EP 97906797 A 19970303; JP 2008139862 A 20080528; JP 53708197 A 19970303; KR 19980708197 A 19981010; US 63107396 A 19960412